Emulation Adapter
Names and Functions of Hardware
R20UT5180EJ0110 Rev. 1.10
Page 12 of 63
Sep.12.22
(22) Clock socket: X1
X1 is the socket for the main oscillator. A 20-MHz resonator is mounted upon the board as shipped.
Taking the oscillation characteristics into consideration, an oscillator on the target system is not used;
the oscillator in this socket of the emulation adapter is used instead. Change the crystal resonator (Xtal)
in the socket if this is required. Mounting a crystal oscillator (EXtal) is also possible. Figure 2-2 shows
the clock socket and peripheral circuits.
When mounting a crystal resonator upon the clock socket, insert an insulating sheet between the crystal
resonator and clock socket, i.e. mount it in the same way as the 20-MHz resonator is mounted on the
product as shipped, to avoid a short-circuit between the pins of the crystal resonator.
Figure 2-2 Clock Socket and Peripheral Circuits
CAUTION
Insulating sheet:
Make sure that an insulating sheet is inserted between a crystal resonator and clock
socket. If this is not the case, the crystal resonator may be short-circuited to pin 8 of the
clock socket. This may cause the emulation adapter to emit smoke or catch fire or
otherwise damage it.
(23) Silk-screened mark for aligning the position of pin 1
This mark indicates the position of pin 1 in the pad pattern for the device to be emulated on the target
system.
(24) Interfaces for the exchange adapter: CN10 and CN11
These connectors are used to connect an exchange adapter or the base board.
